111212220112112 has 20 divisors (see below), whose sum is σ = 246255630248496. Its totient is φ = 47662380048000.

The previous prime is 111212220112111. The next prime is 111212220112127. The reversal of 111212220112112 is 211211022212111.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111212220112111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 496483125389 + ... + 496483125612.

Almost surely, 2^{111212220112112} is an apocalyptic number.

It is an amenable number.

111212220112112 is an abundant number, since it is smaller than the sum of its proper divisors (135043410136384).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

111212220112112 is an equidigital number, since it uses as much as digits as its factorization.

111212220112112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 992966251016 (or 992966251010 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 20.

Adding to 111212220112112 its reverse (211211022212111), we get a palindrome (322423242324223).

The spelling of 111212220112112 in words is "one hundred eleven trillion, two hundred twelve billion, two hundred twenty million, one hundred twelve thousand, one hundred twelve".